Hand-free receiver signal wire for mobile telephone

• US 6,687,516 B2
• Filed: 12/29/2000
• Issued: 02/03/2004
• Est. Priority Date: 10/08/1998
• Status: Expired due to Fees

• Current Assignee: E-Lead Electronic Co., Ltd.
• Original Assignee: E-Lead Electronic Co., Ltd.
• Inventors: Chen, Tonny
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): Taylor, Barry W
• Application Number:
  US09/750,077
• Publication Number:
  US 20010001765A1
• Time in Patent Office: 1,131 Days
• Field of Search: 455/569, 455/450, 455/557, 455/550, 455/575, 455/90, 455/552, 455/553, 455/344, 455/345, 455/570, 455/559, 455/573, 379/446, 379/454, 379/455, 379/388.01, 379/390.01, 379/406.06, 379/430, 379/447
• US Class Current: 455/569.1
• CPC Class Codes: H04M 1/6075 adapted for handsfree use in a vehicle H04M1/6058 takes precedence; arrangements for holding telephones in a vehicle B60R11/0241

Abstract

A signal wire connecting between a hand-free receiver and a mobile telephone includes a first side having a hand-free receiver plug co-operating with the hand-free receiver so as to be connected to the main circuit of the hand-free receiver, and a second side having a mobile telephone plug co-operating with the output receptacle of the mobile telephone so as to be connected to the mobile telephone. In such a manner, the mobile telephone plug includes a voltage control leg provided with a first branch resistor which is adapted to match the power supply circuit of the hand-free receiver to obtain the exact voltage supply value of the mobile telephone, which can be outputted to the power supply input leg of the mobile telephone to function as the power supply of the mobile telephone. In addition, the mobile telephone plug includes a mobile telephone voice output leg provided with a second branch resistor which is adapted to output the voice from the mobile telephone to the voice signal of the input side of the voice amplifying circuit of the hand-free receiver so as to obtain a determined value of the voice signal such that the voice amplifying circuit of the hand-free receiver operates precisely.

Claims

1. A signal wire connecting between a hands-free receiver and a mobile telephone, said signal wire comprising a first end having a hands-free receiver plug for connecting to a main circuit of the hands-free receiver, and a second end including a mobile telephone plug for connecting to an output receptacle of the mobile telephone;

said mobile telephone plug including a voltage control leg having a first replaceable voltage control branch resistor adapted to match a power supply circuit of the hands-free receiver to obtain a predetermined voltage supply output at said mobile telephone plug matching a voltage value required by the mobile telephone, wherein said predetermined voltage supply output is input to the mobile telephone to function as a power supply thereof;

said mobile telephone plug including a mobile telephone voice output leg having at least one second replaceable branch resistor adapted to output voice signals from the mobile telephone to an input of a voice amplifying circuit of the hands-free receiver to obtain a predetermined voice signal level at said input of said voice amplifying circuit.

2. The signal wire according to claim 1, wherein said first replaceable voltage control branch resistor has a resistance value selected from a range of values from zero to infinity.

3. The signal wire according to claim 1, wherein the at least one second replaceable branch resistor has a resistance value selected from a range of values from zero to infinity.

4. A signal wire connecting between a hands-free receiver and a mobile telephone, said signal wire comprising a first end having a hands-free receiver plug for connecting to a main circuit of the hands-free receiver, and a second end including a mobile telephone plug for connecting to an output receptacle of the mobile telephone;

said mobile telephone plug including a voltage control leg having a replaceable voltage control branch resistor adapted to match a power supply circuit of the hands-free receiver to obtain a predetermined voltage supply output at said mobile telephone plug matching a voltage value required by the mobile telephone, wherein said predetermined voltage value required by the mobile telephone, wherein said predetermined voltage supply output is input to the mobile telephone to function as a power supply thereof;

said mobile telephone plug including a mobile telephone voice output leg having a branch capacitor adapted to output voice signals from the mobile telephone to an input of a voice amplifying circuit of the hands-free receiver to obtain a predetermined voice signal level at said input of said voice amplifying circuit.

5. The signal wire according to claim 4, wherein said branch capacitor has a capacitance value selected from a range of values from zero to infinity.

6. The signal wire according to claim 4, wherein the replaceable voltage control branch resistor has a resistance selected from a range of values from zero to infinity.